Gas-burner



A. H. WOLFF.

GAS. BURNER.

APPLICATION FILED MAR. 7' l9l9.

Patented Dec. 6, 192 1.

INVENTOB V 70/ Q ATTORNEY.

UNITED STATES PATENT OFFICE AARON H. women, or NEW YORK, N. Y.

ens-BURNER.

Specification of Letters Patent.

PatentedDec. e, 1921.

Application filed March 7, 1919. Serial No. 281,137.

T 0 all whom it may concern Be it known that I, AARON I-I. il ozirr, a citizen of the United States, residing at the borough of Manhattan, in the city, county, and State of New York, have invented cer tain new and useful Improvements in Gas- Burners, of which the following is a specifi.

stoves, heaters, and lighting fixtures using mantles, have been of the well known Bunsen type, the structure thereof being modified to meet the articular conditions of use. In burnersof this type the common practice I hasbeen to discharge the gas from a pipe line into a mixing tube having air inlet ports adjacent the end of said pipe, so that air will be drawn into the mixing tube by the gas flowing from the pipe, the mixing tube being so constructed that the volume ofthis air may be controlled in order to secure any desired admixture of gas and air. The mixing tube is in communication with a distributing' chamber having a plurality of burner openings. Burners of this type, as a general rule, burn with a low blue flame and back firing through thedistributing chariber to the tube is of frequent occurrence. Furthermore, the flame from each jet is, as a rule, of small volume.

With these conditions in mind, the object of my invention is to provide a blue flame burner which will be so constructed as to not only insure a long flame of large volume, but a substantially perfect combustion of the gas through the proper introduction of air at the point of ignition of the gas, without, however, developing excessively high temperatures.

A burner made in accordance with my invention burns with a circular flame. combustionat the point of ignition'of the gas, being supported in part by the atmospheric air surrounding each burner et, and in part by an auxiliary supply of atmospheric air introduced within the circular flame.

The inflammable mixture delivered to the several burner jets is mixed with air, as in the ordinary Bunsen burner, the airsupplied within the circular flame being for the purpose, not of securing the desired mixture of gas and air, but for promoting combustion high flame having large volume.

The burner casing is so constructed, when aplurality of b'urner'jets are used, as to insure the desired mixture of gas and air de-v llvered to the casing and a proper distribu- 1n a. manner to develop a comparatively tion thereof amongst the several burner jets.

I have found in actual practice that back firlng to the mixing chamber, or mixing tube through the et openings is impossible, there being no'necessity to use gauze, or other well: known appliances, to prevent such back firing.

The invention consists primarily in a gas burner embodying therein a mixing chamber, a mixing tube dischargingthereinto, a

gas supply pipe discharging into said mix-' mg tube, and two concentric tubes of relativelyv different diameters, whereby a substantially circular jet is formed, one of said tubes communicating with said mixing chamber and the other of said tubes communicating with atmosphere, whereby air for supporting combustion is present on both sides of a circular flame;and in such other novel features of construction and combina' tion of parts as are hereinafter set forth and described, and more particularly .pointed out in the claims hereto appended.

Referring to the drawings, Figure I is a view partly in section and partly in elevation, of a gas burner embodying my invention, adapted for use with a gas heater;

Fig. 2 is a plan view thereof'with the mix or tube removed; and

3 is a section on the line 3-3 upon an enlarged scale.

Like letters refer to like the several views.

In the embodiment of my invention shown in the drawings, I employ a casing a formparts throughout ing a mixing and distributing chamber for the inflammable gas mixture. Carried by said casing .11 are two concentric, vertical tubes 5 and c, the tube 0 being slightly smaller in diameter than the tube 7) so that a circular burner jet 'openingd is formed, at the upper ends of said tubes. I

The tube 6 communicates with the chamber a, while the tube 0 extends through said chamber and has an open bottom communicating with atmosphere. A mixture of air and gas is delivered to the chamber a i have foundthat in a burner made in accordance with the drawings, the rate of "flow ing tube 6, to form an enlarged portion 71: of

theeusingextendingadjacent each of the burner jet openings d. The casing 11 is closed exceptas to these jetopenings,

The tubes 6 preferablyi'terminate at a point substantially flush :with the adjacent interior wall of the casing a, and'are in the form of the invention shown, of a length of substantially one-halfinch so that the jet.

openingd of each burnerwill be of sufficient length and sufficiently narrow (approximately of an inch. inthe former the invention shown), to insure the "delivery of a suflicient volume of gas-at the top-01'; the 'nozzle to maintain a flame of the desired volume and height, while preventing the flame e51- lowing the gas through said j'eto'peningto the mixing chaniberandthe mixing tube. I

ofthe gas through the burners is apparently higherthan that-ofthe propagation of flame within said openings: and 'that it is impos sible, byeither varyingthe rateof flow of the gas to the mixing chamber, or by veryingthe mixture in said chamber, to cause a backfiring through these jet openings, not

withstandingthat no gauze or other material. is used in the structure.

The brackets ly''-j are used merelynto mount the burner in a desired relation to a stove, heater, or other appliance inwconnection with which the burner'is used. Theoperation of the herein described gas burner 1s substantially as follows:--.-

\Vhen startingthe burner, the valve 71, "is: openedto permittheflowof gas throughthe pipe g into the mixing'charnber,thisrgas being mixed with atmospheric air as it flows through the mixing tube 6. The richness of the mixtureis controlled by-the'regulator f in the usualm'annen As the'inflamrnable mixtureentersrthe enlarged portion 11 ofthe casing a, it flows the entirelength thereof without impinging upon any of "the several tubes 0 in a manner to interfere: with the free flowofgasor'a proper distribution of the gas'throughout themixing chamber within the casing a. Gas from'the mixin-g chamber flows through theseveral jet openings at and is ignited at the tops ofthe-tubes b and 0.. After the ignition of the'gasat the dischargeend of'the jet openings (1, combus tion at said 'jet openings willbe supported in 'part bythe air surroundin the tubes 6 andqin partb'y a current 0 air flowing through the tubes 0, the circulation of air through said tubes, 1nduced by convection, tileveloplnga flamethree or four inches in length, which flame is substantially circular.

The flow of the air through the tube a, however, is not at a sufficiently high rate to develop excessively hightemperatures in the flame, so thatthe burner may be used in the same manner as the ordinary Bunsen burner, in gas stoves, heaters,etc. The temperature developed by the flame, however, is considerably higher than the ordinary burner flame, the color of the flame being whiter than with the ordinary Bunsen burner.

The air passingthrough the tubes 0 assists materiallyin. a complete combustion of the gas passing through the opening d, the stoppage of this opening'having the instant effect of shortening'the length of the flame and atthe same time deepening its color.

In a burner made in accordance withwmy invention, the air supplied through the tube 0 is solely for thepurpose of aiding'thecoinbus'tion of a mixture of gas and air and in no sense contributes toward, ormodifies, the:

richness of the'mixture.

In a burnermade inaccordance with'my;

invention, higher efiiciency ;may be secured mixin chamber'or the mixing tube, which, though not dangerous, isannoylng. I

While, in the accompanying'drawings I have shown a burner in which the jet openings are circularand arranged ina straight.

line, it is apparent that the configuration of said openings and of the mixingchamber-is immaterial t the invention, andqmay be modified indefinitely to adapt it to. different stove orheater structuresnin connection with which'the burner is tobe used.

The gas used in aburne'r niadeinia'ecord ance with my inventionpmay'be at-thepres' sure of the ordinary service"p1pe"and='no special mechanism is required for developa of air through the pipes 0. 1 i It isnot my-1ntent1on to ll'mlt tlle invenclaim as new and desire to have protected by'Letters Patent, is:

1. A gas'burner embodying therein a easlng forming a mlxlng and distributing chamber, a plurality of shor-t'tubes comm e nicati ng with and projecting from the top of said casing, a plurality of tubes extend;

ing vertically throughsaid casing, beyondthe topthereof and within said'short tubes,

in and maintaining a desired circulation '95 use of the burner there is no possibility of back firing through the jet openings tothetion to. the precise details ofcon'struction being conterminous therewith, whereby an elongated jet opening is formed between each of said long and each of said short tubes, said long tubes opening to atmosphere below said casing, said casing having an enlarged portion at one side of said long tubes, a mixing tube discharging into one end of said enlarged portion and in substantially axial alinement therewith, whereby the incoming combustible mixture has an unobstructed passage to adjacent each of the burners, and a gas supply pipe discharging into said mixing tube.

2. A gas burner embodying therein a cas- 1ng forming a mixing and distributing chamber, a plurality of tubes extending vertically through said casing and beyond the top thereof, a plurality of short tubes inclosing the projecting ends of said other tubes, said short tubes communicating with the interior of said casing through a narrow opening between same and said first named tubes, whereby an elongated jet opening between said tubes is formed, and back firing therethrough to said mixing. chamber is prevented, said casing being extended on one side of said first named tubes, a mixing tube discharging into said extended portion of said casing and in substantially axial alinement therewith, whereby the incoming combustible mixture has an unobstructed pas sage to adjacent each of the burners, and a gas pipe discharging into said mixing tube.

In witness whereof I have hereunto afiixed my signature, this 5th day of March, 1919, in the presence of two subscribing witnesses.

AARON H. WOLFE.

Witnesses:

F. T. WENTWORTH,

A. E. BENTON. 

